User-defined Playground

Break Team Playground

Adam Leskis
by  Adam Leskis · on
LinuxKubernetesObservability

A small shop runs on a k3s cluster across several VMs, with real traffic and a steady stream of routine events. Start a shift with your team. Something will go wrong. Find it, fix it, and check that it stays fixed.

Break Team playground: A small shop runs on a k3s cluster across several VMs, with real traffic and a steady stream of routine events. Start a shift with your team. Something will go wrong. Find it, fix it, and check that it stays fixed.
Machines & network
5 VMs · 5 vCPU · 8GiB RAM
Playground host Internet NAT MASQUERADE local (bridge) 172.16.0.0/24 gw 172.16.0.1/24eth0eth0eth0eth0eth0
VM
vCPU ·
eth0
/
oci://ghcr.io/lpmi-13/breakteam-edge-rootfs:v3@sha256:9febf8508973d147aa99f73b576a01e413173f6cd7eac96a98ca08ce841f4f94
VM
vCPU ·
eth0
/
oci://ghcr.io/lpmi-13/breakteam-app-server-rootfs:v3@sha256:497f713d38e1ee75441138a060e9800a45ddcf1de644aa3ac810cdfc6be16c9c
VM
vCPU ·
eth0
/
oci://ghcr.io/lpmi-13/breakteam-app-agent-rootfs:v3@sha256:322143c86fc75b61ce65f5282e0a76bc9113cbf3e2b6d7161425ea09de42f68f
VM
vCPU ·
eth0
/
oci://ghcr.io/lpmi-13/breakteam-data-rootfs:v3@sha256:9f7f7c6919d476499d51de21cb8b793dbc6034eb07f1d33d336ead2d4d11da00
VM
vCPU ·
eth0
/
oci://ghcr.io/lpmi-13/breakteam-ops-rootfs:v3@sha256:e3c1b001f6583f5d760c4c2fe6b331d9ea560929c97dc6fc003cf9d2c7b63f4b
About

A team incident-response exercise. Nothing here needs a facilitator or anything installed on your laptop.

  1. Start the playground and open the Room tab.
  2. Follow the room's setup steps to invite your team.
  3. Press Start shift when everyone has arrived.

Spectators can follow along from the spectator page, which never shows the cause.

Every playground includes

A real VM, not a container

Get root on a VM with its own kernel, so Docker, Kubernetes, and systemd just work.

Read the docs →

SSH from browser or CLI

Use the built-in web terminal, or connect with labctl ssh, plain ssh, scp, or rsync.

Read the docs →

Drive it with AI

Let Claude, Codex, or any MCP client start this playground and run commands in it.

Read the docs →

Expose HTTP(S) ports

Give any web app running inside the VM a public URL - for yourself or to share with others.

Read the docs →

Share terminals

Invite others into your terminal session, or open it yourself from another device.

Read the docs →

Customize with init scripts

Add shell scripts that run at boot to install packages, clone repos, or seed test data.

Read the docs →

Private networking

VMs reach the internet via NAT with no public IP; several VMs share bridge networks.

Read the docs →

Ephemeral or persistent

By default, VMs are destroyed when the session ends; enable persistence to keep the disks for next time.

Read the docs →

Built-in container registry

A private registry.iximiuz.com for every playground to share images across services and VMs.

Read the docs →

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